# The Housing (Right to Acquire) Regulations 1997, Paragraph 4


The right to acquire does not arise unless the landlord owns the freehold or has an interest sufficient to grant a lease in pursuance of this Part for—
(a) where the dwelling-house is a house, a term exceeding 21 years, or
(b) where the dwelling-house is a flat, a term of not less than 50 years,
commencing, in either case, with the date on which the tenant’s notice claiming to exercise the right to acquire is served.

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Source: https://www.legislation.gov.uk/uksi/1997/619/schedule/5/paragraph/4 (the official version)
Page: https://openlegislation.uk/housing-right-to-acquire-regulations-1997/schedule-5/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.